GW Instek APS-1102 User Manual - Manual (Page 55)

3.4 Main Operation Example
APS-1102 Programmable AC/DC Power Source 3-25
3.4.7 Using limiter functions
a) Using current limiter
The APS-1102 includes an output peak current limiter function and an output average current limiter
function.
Limiter settings are retained separately for 100 V and 200 V ranges.
Setting range limits can be set for output voltage and output frequency.
See “5.3.7 Set Output peak current limiter settings”.
See “5.3.8 Set Output average current limiter settings”.
Table 3-9. Current Limiter Setting Ranges
Setting Setting Range Resolution Initial Value
Output peak
current limiter
(positive)
100 V range +10.0 A to +42.0 A 0.1 A +42.0 A
200 V range +5.0 A to +21.0 A 0.1 A +21.0 A
Output peak
current limiter
(negative)
100 V range 42.0 A to 10.0 A 0.1 A 42.0 A
200 V range 21.0 A to 5.0 A 0.1 A 21.0 A
Output average
current limiter
100 V range 1.0 A to 10.5 A 0.1 A 10.5 A
200 V range 1.0 A to 5.3 A 0.1 A 5.3 A
For a capacitive load or inductive load, the output peak current limiter may not achieve the peak
current value as set, due to overshooting or undershooting the set current value, or variable output
current waveforms while the limiter is operating.
For an inductive load, operation of the limiter can cause the current to vary and, as a result, an output
overvoltage may occur.
Note with caution that the output peak current limiter may allow overshooting, depending on the
load, and therefore may not achieve the peak current value as set.
For an inductive load, operation of the limiter can cause an output overvoltage, triggering the
overvoltage protection function. In this case, the peak current limiter settings (positive and
negative) should be reduced.
If the output current or frequency suddenly increases, due to an output short, etc., the limiter
response may not be quick enough, so the output overcurrent protection function may be triggered.
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CAUTION
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CAUTION